Rest days are tagged to and considered part of the subsequent duty and may change due to disruption, recovery or freighter trip changes. Prior to a rest day, crew are expected to have had 12 hours of rest in Dubai AND be acclimatised prior to its commencement if the subsequent duty necessitates it — This is accounted for in this calculator.
Standby for ULR — 3 local nights and acclimatisation must be completed before SBU starts.